Mark Ross Pellegrino (born April 9, 1965 Los Angeles, California) is a American actor and acting teacher, best known for his compelling portrayals of complex, powerful, and often supernatural characters. Pellegrino has built a prolific career spanning television and film. He achieved widespread recognition for his iconic roles as Lucifer in Supernatural and the mysterious island protector Jacob in Lost. His other prominent television credits include Dexter, Being Human, and 13 Reasons Why. On the big screen, he is recognized for his memorable roles in cult classics and acclaimed dramas, including The Big Lebowski, National Treasure, and Capote. Beyond acting, he is a dedicated educator, teaching the Meisner technique at Playhouse West in Los Angeles. He has been married to director and acting coach Tracy Pellegrino (née Bell) since 2008, and he is a stepfather to her two children.

Filmography

• 2026A Crime Story — Co-Executive Producer
• 2024Beverly Hills Cop: Axel F — Beck
• Class of '09 — Mark Tupirik
• The Last Thing He Told Me — Wallace
• Underdeveloped — Nader
• The Rookie: Feds — Victor Quincannon
• American Rust — Virgil Poe
• 9-1-1 — Mitchell Trent
• 2018Beirut — Cal Riley
• 13 Reasons Why — Bill Standall
• Quantico — Clayton Haas
• The Returned — Jack Winship
• 2014Bad Turn Worse — Giff
• The Tomorrow People — Dr. Jedikiah Price
• 2013The Trials of Cate McCall — Detective Welch
• 2012Delivering the Goods — Mr. Quentin
• 2012Hemingway & Gellhorn — Max Eastman
• Revolution — Jeremy Baker
• 2011Bad Meat — Doug Kendrew
• Being Human — James Bishop
• 2011Blood Meridian Test Reel — Judge Holden
• Grimm — Jarold Kempfer
• 2011Joint Body — Nick Burke
• 2011Locke & Key — Rendell Locke
• Person of Interest — Daniel Drake
• 20092:13 — John Tyler
• Castle — Tom Dempsey / Tom Dempsey III
• 2009Disappearing in America — Bodyguard
• The Philanthropist — Walter Kerabatsos
• 2009The Spirit Box — Mr. Drake
• 2008An American Affair — Graham Caswell
• Fear Itself — Mr. Drake
• The Mentalist — Von McBride
• Burn Notice — Quentin King
• Chuck — Fulcrum agent, Hector
• 2007The Number 23 — Kyle Finch
• Women's Murder Club
• 2006Caffeine — Tom
• Dexter — Paul Bennett
• The Unit — Gary Soto
• 2005Capote — Dick Hickock
• Criminal Minds — Lt. Evans
• 2005Ellie Parker — Justin
• Ghost Whisperer — Ben Tillman / Joseph Webb
• Grey's Anatomy — Chris
• Numb3rs — Tim Hamer
• Prison Break — Patrick Vikan
• Supernatural — Lucifer
• The Closer — Gavin Q. Baker III
• Lost — Jacob
• 2004NYPD 2069 — Phil Pavelka
• 2004National Treasure — Agent Johnson
• 2004Spartan — Convict
• 2004Twisted — Jimmy Schmidt
• 2003Moving Alan — Alan Kennard
• 2003The Hunted — Dale Hewitt
• CSI: Miami — Jed Gold, Greg Calomar
• 2002Ronnie — Keith Schwann
• Without a Trace — Sadik Marku
• Crossing Jordan — Keith Walker
• 2001Ellie Parker — Justin
• 2001Monsters — Sally Spinelli
• 2001Mulholland Drive — Joe
• 2001Say It Isn't So — Jimmy Mitchelson
• CSI: Crime Scene Investigation — Elliot Perolta, Bruno Curtis
• 2000Drowning Mona — Murph Calzone
• 2000House of Love — Neil
• 2000Lost in the Pershing Point Hotel — Tripper
• 2000Something Else — Julian
• 1999A Murder of Crows — Prof. Arthur Corvus
• 1999Certain Guys — Cal
• 1999Word of Mouth — Darrow (as Robert Rand)
• Brimstone — Robert Busch
• 1998The Big Lebowski — Treehorn Thug
• 1997Born Into Exile — Walter
• 1997Macon County Jail — Dan Oldum
• 1997The Lost World: Jurassic Park — Tourist #6 (uncredited)
• The Practice — Herrick Smoltz
• 1996For Life or Death — Earl Stockman
• 1996Little Surprises
• Nash Bridges — Ferguson
• 1996The Cherokee Kid — Frank Bonner
• The Sentinel — Ray Weston
• Deadly Games — Ross Logan
• Marker
• ER — Nathan Conley
• 1994F.T.W. — Deputy Sommers
• 1994Knight Rider 2010 — Robert Lee
• Viper — Yuri
• 1993Bank Robber — Motorcycle Cop
• 1993Class of '61 — Skinner
• 1993Midnight Witness — Patterson
• The X-Files — Derwood Spinks
• 1993Trouble Bound — Deputy Roy
• 1992Lethal Weapon 3 — Billy Phelps
• The Hat Squad — D.W. Strong
• 1991Blood and Concrete — Bart
• 1991Inside Out — Jack (segment "Doubletalk")
• 1991Prayer of the Rollerboys — Bango
• The Commish — Joe Lund
• Northern Exposure — Rolf Hauser
• Doogie Howser, M.D. — Dude
• 1989Night Life — Allen Patumbo
• 1989No Holds Barred — Randy
• Tales from the Crypt — Punk (segment "The Switch")
• 1987Death Wish 4: The Crackdown — Punk
• 1987Fatal Beauty — Frankenstein
• L.A. Law — Punk
• Hunter — John Reynolds
• Outsider — Producer
• Strangers in a Strange Land — Grungy Man
• Vought Rising

Appearances as themselves (2)

• 2014Lennon or McCartney — Self
• 1989Hulkamania 4 — Himself